GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 156 511 693 patent documents

This week's update (14/06/2024 12:00 CET):

200 241 new documents added

1 026 356 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 3683373 B1 20220713 - UTILIZATION OF POROUS BUILDING MATERIALS IN SOUND ABSORPTION

Title (en)

UTILIZATION OF POROUS BUILDING MATERIALS IN SOUND ABSORPTION

Title (de)

VERWENDUNG VON PORÖSEN BAUSTOFFEN ZUR SCHALLABSORPTION

Title (fr)

UTILISATION DE MATÉRIAUX DE CONSTRUCTION POREUX POUR L'ABSORPTION ACOUSTIQUE

Publication

EP 3683373 B1 20220713 (EN)

Application

EP 19152584 A 20190118

Priority

EP 19152584 A 20190118

Abstract (en)

[origin: EP3683373A1] According to an example aspect of the present invention, there is provided an acoustic structure comprising a natural fibrous acoustic coating on a surface of a porous background structure.

IPC 8 full level

B32B 3/26 (2006.01); E04B 1/86 (2006.01); E04B 1/84 (2006.01)

CPC (source: EP)

E04B 1/86 (2013.01); E04B 2001/8461 (2013.01); E04B 2001/8476 (2013.01)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3683373 A1 20200722; EP 3683373 B1 20220713; ES 2928433 T3 20221117

DOCDB simple family (application)

EP 19152584 A 20190118; ES 19152584 T 20190118